44PointLowApproach33

4-4 3-3 answer to white kakari  

If you want to shock a stronger player who is giving you a handicap, you can answer the usual kakari of with the surprising kosumi at . Many players don't know that this is actually a joseki listed on page 1084 of "Igo Daijiten" (Big Joseki Lexikon) Volume 1, Tokyo, Nihon Kiin, 1986, as Diagram 9257. However, in that book black has a stone on the 3-3 point first and answers the kakari at with a kosumi outwards to the star point.

The continuation in that diagram is shown below:

Continuation  

Whatever happens after the answer on 3-3 in the diagram above, white can't trade the white stone on the outside for the corner. So this is actually an attack on the kakari stone and should be played aiming at that attack, not in a defensive state of mind.

Professional examples

Zhang Xuebin (Black) versus Wang Yao (White), 2008 NEC Cup  

It appears the motivation for the 4-4 3-3 enclosure is to prevent from making sabaki.

White wins by resignation.